Voltage Reducer

[log]

Hi,

My frequency counter is IC based with one of its
pin as direct input.. about 6Volts. Now I want to
measure the frequency of the power lines. I plan
to use a step down transformer of 110 volts to
6 volts secondary. Can I use the connect transformer
6 volts output directly to the pin of the IC.. or do
I have to use some kind of current limiter. If so. What
current limiter must I use? Or does the IC only draw
the required few current it needs without the transformer
overloading it? Thanks.

log

 

[Vlad]

Hi,

My frequency counter is IC based with one of its
pin as direct input.. about 6Volts. Now I want to
measure the frequency of the power lines. I plan
to use a step down transformer of 110 volts to
6 volts secondary. Can I use the connect transformer
6 volts output directly to the pin of the IC.. or do
I have to use some kind of current limiter. If so. What
current limiter must I use? Or does the IC only draw
the required few current it needs without the transformer
overloading it? Thanks.

log

Give us more details on the input IC you are using.
In any case a resistive network should be in order, provided you don't
need ground isolation. If you do, the transformer makes more sense.

Vlad